19-2663; Rev 0; 10/02 200mA/250mA/300mA Current-Limit Switches Features The MAX4789–MAX4794 family of switches feature internal current limiting to prevent damage to host devices due to faulty load conditions. These analog switches have a low 0.2Ω on-resistance and operate from 2.3V to 5.5V input voltage range. They are available with guaranteed 200mA, 250mA, and 300mA current limits, making them ideal for SDIO and other load switching applications. When the switch is on and a load is connected to the port, a guaranteed blanking time of 14ms ensures that the transient voltages settle down. If after this blanking time the load current is greater than the current limit, the MAX4789, MAX4791, and MAX4793 enter a latchoff state where the switch is turned off and FLAG is issued to the microprocessor. The switch can be turned on again by cycling the power or the ON pin. The MAX4790, MAX4792, and MAX4794 have an autoretry feature where the switch turns off after the blanking time and then continuously checks to see if the overload condition is present. The switch remains on after the overload condition disappears. The MAX4789–MAX4794 are available in 6-pin thin QFN and tiny space-saving 4-pin SOT143 packages. The MAX4789/MAX4791/MAX4793 are also available in a tiny 5-pin SOT23 package. For lower current current-limiting switches, refer to the MAX4785–MAX4788 data sheet. ♦ Guaranteed Current Limit: 200mA, 250mA, 300mA ♦ Thermal-Shutdown Protection ♦ Reverse Current Protection Applications ♦ ♦ ♦ ♦ 0.2Ω On-Resistance 14ms Guaranteed Blanking Time FLAG Function (MAX4789/MAX4791/MAX4793) 80µA Supply Current ♦ 8µA Latch-Off Current (MAX4789/MAX4791/MAX4793) ♦ 0.01µA Shutdown Current ♦ 2.3V to 5.5V Supply Range ♦ Undervoltage Lockout ♦ Fast Current-Limit Response Time (5µs) ♦ Tiny QFN and SOT23/SOT143 Packages Ordering Information PART TEMP RANGE TOP MARK PIN-PACKAGE MAX4789EUS-T -40°C to +85°C 4 SOT143-4 KAFE MAX4789EUK-T -40°C to +85°C 5 SOT23-5 AEAC MAX4789ETT -40°C to +85°C 3 x 3 Thin QFN-EP* ABO MAX4790EUS-T -40°C to +85°C 4 SOT143-4 KAFF MAX4790ETT ABP -40°C to +85°C 3 x 3 Thin QFN-EP *EP = Exposed pad. Ordering Information continued at end of data sheet. Selector Guide appears at end of data sheet. PDAs and Palmtop Devices Cell Phones GPS Systems Hand-Held Devices Typical Operating Circuit SDIO 2.3V TO 5.5V Pin Configurations TOP VIEW IN IN 1 GND 2 ON 3 5 OUT MAX4789 MAX4791 MAX4793 OUT 1 4 IN MAX4789– MAX4794 4 FLAG GND 2 3 ON ON MAX4789 MAX4791 MAX4793 µP FLAG TO SDIO PORT OUT SOT23 SOT143 GND Pin Configurations continued at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. 1 MAX4789–MAX4794 General Description MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches ABSOLUTE MAXIMUM RATINGS IN, ON, FLAG, OUT to GND .....................................-0.3V to +6V OUT Short Circuit to GND .................................Internally Limited Continuous Power Dissipation (TA = +70°C) 4-Pin SOT143 (derate 4.0mW/°C above +70°C)..........320mW 5-Pin SOT23 (derate 7.1mW/°C above +70°C)............571mW 6-Pin Thin QFN (derate 24.4mW/°C above +70°C)...1951.2mW Operating Temperature Range ...........................-40°C to +85°C Junction Temperature ......................................................+150°C Storage Temperature Range .............................-65°C to +150°C Lead Temperature (soldering, 10s) .................................+300°C Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS (VIN = 2.3V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN = 3.3V, TA = +25°C.) (Note 1) PARAMETER SYMBOL Operating Voltage VIN Quiescent Current IQ CONDITIONS TYP 2.3 VON = VIN, IOUT = 0, VIN = +2.3V to +5.0V switch on VIN = +5.0V to +5.5V Latch-Off Current (Note 2) ILATCH VON = VIN, after an overcurrent fault (MAX4789/MAX4791/MAX4793) Shutdown Current ISHDN VON = 0V Forward Current Limit MIN 80 MAX UNITS 5.5 V 120 160 8 0.01 15 µA 1 µA MAX4789/MAX4790 200 300 MAX4791/MAX4792 250 375 MAX4793/MAX4794 300 300 Reverse Current Limit MAX4791/MAX4792 375 ON Input Leakage VON = VIN or GND Off Switch Leakage VON = 0V, VOUT = 0V MAX4793/MAX4794 UVLO Rising edge 0.01 1.8 +1 µA 1 µA 2.2 100 RON ON Input Logic High Voltage VIH ON Input Logic Low Voltage VIL TA = +25°C, IOUT = 100mA 0.2 TA = -40°C to +85°C, IOUT = 100mA ISINK = 1mA (MAX4789/MAX4791/MAX4793) FLAG Output High Leakage Current VIN = V FLAG = 5.5V (MAX4789/MAX4791/MAX4793) V mV 0.4 0.5 2.0 FLAG Output Logic Low Voltage mA 450 -1 Undervoltage Lockout Hysteresis On-Resistance (Note 3) mA 450 MAX4789/MAX4790 Undervoltage Lockout µA Ω V 0.8 V 0.4 V 1 µA Thermal Shutdown 150 °C Thermal-Shutdown Hysteresis 15 °C DYNAMIC Turn-On Time (Note 4) VON from low to high; IOUT = 10mA, CL = 0.1µF 100 µs Turn-Off Time (Note 4) VON from high to low; IOUT = 10mA, CL = 0.1µF 40 ns 2 _______________________________________________________________________________________ 200mA/250mA/300mA Current-Limit Switches (VIN = 2.3V to 5.5V, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VIN = 3.3V, TA = +25°C.) (Note 1) PARAMETER SYMBOL Blanking Time CONDITIONS tBLANK MIN Overcurrent fault (Figures 2, 3) Short-Circuit Current-Limit Response Time TYP 14 VON = VIN = 3.3V, short circuit applied to OUT Retry Time UNITS 60 ms 5 MAX4790/MAX4792/MAX4794 Figure 2 (Note 5) tRETRY MAX µs 98 420 ms All parts are 100% tested at +25°C. Limits across the full temperature range are guaranteed by design and correlation. Latch-off current does not include the current flowing into FLAG. RON specification for QFN package parts are guaranteed by design. The on time is defined as the time taken for the current through the switch to go from 0mA to full load. The off-time is defined as the time taken for the current through the switch to go from full load to 0mA. Note 5: Retry time is typically 7 times the blanking time. Note 1: Note 2: Note 3: Note 4: Typical Operating Characteristics (VIN = 3.3V, TA = +25°C, unless otherwise noted.) SUPPLY CURRENT vs. TEMPERATURE VON = VIN 100 70 60 50 40 30 20 VIN = 5V 80 LATCH-OFF (µA) SUPPLY CURRENT (µA) VIN = 3.3V 60 40 20 10 0 0 2.5 3.0 3.5 4.0 4.5 5.0 10 35 60 VIN = 5V VIN = 3.3V -40 85 -15 10 35 60 TEMPERATURE (°C) TEMPERATURE (°C) SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE SHUTDOWN LEAKAGE CURRENT vs. TEMPERATURE LATCH-OFF LEAKAGE CURRENT vs. TEMPERATURE VCC = 5V 1 0.1 VCC = 3.3V 0.01 0.001 -15 10 35 TEMPERATURE (°C) 60 85 VIN = 5V 1 VIN = 3.3V 0.1 0.01 0.001 0.0001 -40 100 LATCH-OFF LEAKAGE CURRENT (nA) 10 10 MAX4789 toc05 MAX4789 toc04 SHUTDOWN SUPPLY CURRENT (nA) -15 VON = VIN SUPPLY VOLTAGE (V) 100 -40 -40 5.5 SHUTDOWN LEAKAGE CURRENT (nA) 2.0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 85 MAX4789 toc06 SUPPLY CURRENT (µA) 80 MAX4789 toc02 VON = VIN 90 120 MAX4789 toc01 100 LATCH-OFF CURRENT vs. TEMPERATURE MAX4789 toc03 QUIESCENT SUPPLY CURRENT vs. SUPPLY VOLTAGE 10 1 VIN = 5V 0.1 VIN = 3.3V 0.01 0.001 0.0001 -15 10 35 TEMPERATURE (°C) 60 85 -40 -15 10 35 60 85 TEMPERATURE (°C) _______________________________________________________________________________________ 3 MAX4789–MAX4794 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (continued) (VIN = 3.3V, TA = +25°C, unless otherwise noted.) NORMALIZED ON-RESISTANCE vs. TEMPERATURE OUTPUT CURRENT vs. OUTPUT VOLTAGE 1.0 VCC = 5V 0.8 0.6 0.4 MAX4789 toc08 450 400 OUTPUT CURRENT (mA) 1.2 NORMALIZED RON 500 MAX4789 toc07 1.4 MAX4793/MAX4794 350 300 MAX4789/MAX4790 250 MAX4791/MAX4792 200 150 100 0.2 50 0 0 -15 10 35 60 85 VIN - VOUT (V) SWITCH TURN-ON/OFF TIMES vs. TEMPERATURE FLAG-BLANKING TIMEOUT vs. TEMPERATURE ON 100 VCC = 5V VCC = 3.3V 1 0.1 OFF ILOAD = 10mA 10 40 35 30 20 0.001 -15 45 25 0.01 -40 50 MAX4789 toc10 MAX4789 toc09 1000 10 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 TEMPERATURE (°C) FLAG-BLANKING TIME (ms) -40 TURN-ON/OFF TIMES (µs) MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches 35 60 85 -40 -15 10 35 CURRENT-LIMIT RESPONSE 85 CURRENT-LIMIT RESPONSE MAX4789 toc11 VIN = 3.3V CIN = 1µF 60 TEMPERATURE (°C) TEMPERATURE (°C) MAX4789 toc12 COUT = 1µF VIN 2V/div VIN = VON 1V/div VON 2V/div IOUT 100mA/div 40µs/div 4 IOUT 100mA/div VIN = VON CIN = 1µF COUT = 1µF 20µs/div _______________________________________________________________________________________ 200mA/250mA/300mA Current-Limit Switches CURRENT-LIMIT RESPONSE (OUT SHORTED TO GND) SWITCH TURN-ON TIME RESPONSE MAX4789 toc13 CIN = 1µF COUT = 1µF MAX4789 toc14 VIN 2V/div VON 1V/div VOUT 2V/div IOUT 10mA/div IOUT 5A/div 40µs/div 100µs/div FLAG-BLANKING RESPONSE SWITCH TURN-OFF TIME RESPONSE MAX4789 toc16 MAX4789 toc15 VON 2V/div VIN 2V/div VON 2V/div FLAG 2V/div IOUT 10mA/div IOUT 100mA/div 4ms/div 200ns/div Pin Description PIN QFN MAX4789 MAX4791 MAX4793 QFN MAX4790 MAX4792 MAX4794 5-SOT23 MAX4789 MAX4791 MAX4793 4-SOT143 MAX4789– MAX4794 NAME 1 — 4 — FLAG 2 2 2 2 GND 3 3 3 3 ON Active-High Switch On Input. A logic high turns the switch on. 4 1, 4 — — N.C. No Connection. Not internally connected. 5 5 1 4 IN 6 6 5 1 OUT FUNCTION Fault Output. This open-drain output goes low when the device stays in forward or reverse current limit for more than the blanking time period. FLAG is high impedance when a fault is not present or when ON is low. Ground Input. Bypass with a 0.1µF ceramic capacitor to ground. Switch Output. Bypass with a 0.1µF ceramic capacitor to ground. _______________________________________________________________________________________ 5 MAX4789–MAX4794 Typical Operating Characteristics (continued) (VIN = 3.3V, TA = +25°C, unless otherwise noted.) MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches REVERSE CURRENT DETECTOR MAX4789/MAX4791/ MAX4793 ONLY FLAG BLANKING TIME CIRCUITRY N FORWARD CURRENT DETECTOR N IN ON UNDERVOLTAGE LOCKOUT OUT +2.0V LOGIC AUTORETRY MAX4789–MAX4794 GND Figure 1. Functional Diagram Detailed Description The MAX4789–MAX4794 are forward/reverse currentlimited switches that operate from a 2.3V to 5.5V input voltage range and guarantee a 200mA, 250mA, and 300mA minimum current-limit threshold for different options. The voltage drop across an internal sense resistor is compared to two reference voltages to indicate a forward or reverse current-limit fault. When the load current exceeds the preset current limit for greater than the fault-blanking time, the switch opens. The MAX4790, MAX4792, and MAX4794 have an autoretry function that turns on the switch again after an internal retry time expires. If the faulty load condition is still present after the blanking time, the switch turns off again and the cycle is repeated. If the faulty load condition is not present, the switch remains on. The MAX4789, MAX4791, and MAX4793 do not have the autoretry option and the switch remains in latch-off mode until the ON pin or the input power is cycled from high to low and then high again. The undervoltage lockout (UVLO) circuit prevents erroneous switch operation when the input voltage goes too low during startup conditions. 6 Reverse Current Protection The MAX4789–MAX4794 limit the reverse current (VOUT to VIN) from exceeding the maximum IREV value. The switch is shut off and FLAG is asserted (MAX4789/ MAX4791/MAX4793) if the reverse current-limit condition persists for more than the blanking time. This feature prevents excessive reverse currents from flowing through the device. Switch-On/Off Control Toggle ON high to enable the current-limited switches. The switches are continuously on, only if VIN exceeds the UVLO threshold (typically 2V) and there is no fault. When a forward/reverse current fault is present or the die exceeds the thermal-shutdown temperature of +150°C, OUT is internally disconnected from IN and the supply current decreases to 8µA (latch off). The switch is now operating in one of its off states. The switch-off state also occurs when driving ON low, thus reducing the supply current (shutdown) to 0.01µA. Table 1 illustrates the ON/OFF state of the MAX4789–MAX4794 current-limit switches. FLAG Indicator The MAX4789, MAX4791, and MAX4793 feature a latched fault output, FLAG. Whenever a fault is activated, it latches FLAG output low and also turns the switch _______________________________________________________________________________________ 200mA/250mA/300mA Current-Limit Switches ON FAULT Low X OFF Shutdown High Undervoltage Lockout OFF Shutdown High Thermal High Current Limit SWITCH ON/OFF SUPPLY CURRENT MODE OFF immediately (tBLANK period does not apply) Latch off OFF after tBLANK period has elapsed ON during tBLANK period, OFF during tRETRY period for the MAX4790, MAX4792, and MAX4794; cycle repeats until fault is removed Latch off off. FLAG is an open-drain output transistor and requires an external pullup resistor from FLAG to IN. During shutdown (ON is low), the pulldown on FLAG output is released in order to limit power dissipation. FLAG goes low when any of the following conditions occur: • The die temperature exceeds the thermal-shutdown temperature limit of +150°C. • The device is in current limit for more than the faultblanking period. • VIN is below UVLO threshold. Autoretry (MAX4790/MAX4792/MAX4794) When the forward or reverse current-limit threshold is exceeded, tBLANK timer begins counting (Figure 2). The timer resets if the overcurrent condition disappears before tBLANK has elapsed. A retry time delay, tRETRY, is started immediately after tBLANK has elapsed and during that time, the switch is latched off. At the end of tRETRY, the switch is turned on again. If the fault still exists, the cycle is repeated. If the fault has been removed, the switch stays on. The autoretry feature saves system power in the case of an overcurrent or short-circuit condition. During tBLANK, when the switch is on, the supply current is at the current limit. During tRETRY, when the switch is off, the current through the switch is zero. Instead of observing the full load current, the switch sees the equivalent load current times duty cycle or ISUPPLY = I LOAD ✕ t BLANK /(t BLANK + t RETRY ). With a typical tBLANK = 37ms and typical tRETRY = 259ms, the duty cycle is 12%, which results in an 88% power savings over the switch being on the entire time. The duty cycle is consistent across the process and devices. Latch Off (MAX4789/MAX4791/MAX4793) When the forward or reverse current-limit threshold is exceeded, tBLANK timer begins counting. The timer resets if the overcurrent condition disappears before tBLANK has elapsed. The switch is shut off if the overcurrent condition continues up to the end of the blank- tBLANK tRETRY See the Autoretry section tBLANK tBLANK CURRENT LIMIT SHORT CONDITION REMOVED LOAD CURRENT ON SWITCH STATUS OFF Figure 2. MAX4790/MAX4792/MAX4794 Autoretry Fault Blanking Diagram ing time. Reset the switch by either toggling ON (Figure 3a) or cycling the input voltage below UVLO, typically 2V (Figure 3b). Fault Blanking The MAX4789–MAX4794 feature 14ms (min) fault blanking. Fault blanking allows current-limit faults, including momentary short-circuit faults that occur when hot swapping a capacitive load, and also ensures that no fault is issued during power-up. When a load transient causes the device to enter current limit, an internal counter starts. If the load-transient fault persists beyond the fault-blanking timeout, the MAX4789/MAX4791/ MAX4793 FLAG asserts low. Load-transient faults less than tBLANK do not cause a FLAG output assertion. Only current-limit faults are blanked. A thermal fault and input voltage drops below the UVLO threshold cause FLAG to assert immediately and do not wait for the blanking time. Thermal Shutdown The MAX4789–MAX4794 have a thermal shutdown feature to protect the devices from overheating. The switch turns off and FLAG goes low immediately (no fault blanking) when the junction temperature exceeds +150°C. The switch turns back on when the device temperature drops to approximately 15°C. _______________________________________________________________________________________ 7 MAX4789–MAX4794 Table 1. MAX4789–MAX4794 Switch Truth Table MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches tBLANK the MAX4789–MAX4794 from tripping erroneously. If the load capacitance is too large, then current may not have enough time to charge the capacitance and the device assumes that there is a faulty load condition. The maximum capacitive load value that can be driven from OUT is obtained by the following formula: tBLANK LOAD CURRENT ON SWITCH STATUS CMAX < OFF ON PIN VOLTAGE Layout and Thermal Dissipation To optimize the switch response time to output shortcircuit conditions, it is very important to keep all traces as short as possible to reduce the effect of undesirable parasitic inductance. Place input and output capacitors as close as possible to the device (no more than 5mm). IN and OUT pins must be connected with short traces to the power bus. During normal operation, the power dissipation is small and the package temperature change is minimal. If the output is continuously shorted to ground at the maximum supply voltage, the operation of the switches with the autoretry option does not cause problems because the total power dissipated during the short is scaled by the duty cycle: FLAG PIN STATUS (a) tBLANK tBLANK LOAD CURRENT ON SWITCH STATUS IN PIN VOLTAGE IFWD _ MIN × tBLANK _ MIN VIN OFF UVLO PMAX = FLAG PIN STATUS (b) Figure 3. MAX4789/MAX4791/MAX4793 Latch-Off Fault Blanking Applications Information Input Capacitor To limit the input voltage drop during momentary output short-circuit conditions, connect a capacitor from IN to GND. A 0.1µF ceramic capacitor is adequate for most applications; however, higher capacitor values further reduce the voltage drop at the input and are recommended for lower voltage applications. VIN _ MAX × IOUT _ MAX × tBLANK tRETRY + tBLANK where VIN = 5.5V, IOUT = 450mA, tBLANK = 14ms, and tRETRY = 98ms. Attention must be given to the MAX4789, MAX4791, and MAX4793 where the latch-off condition must be manually reset by toggling ON from high to low. If the latch-off time duration is not sufficiently high, it is possible for the device to reach the thermal-shutdown threshold and never be able to turn the device on until it cools down. Chip Information TRANSISTOR COUNT: 1408 PROCESS: BiCMOS Output Capacitance Connect a 0.1µF capacitor from OUT to GND. This capacitor helps prevent inductive parasitics from pulling OUT negative during turn-off, thus preventing 8 = 302mW _______________________________________________________________________________________ 200mA/250mA/300mA Current-Limit Switches Ordering Information (continued) PART TOP VIEW FLAG (N.C.) 1 6 OUT MAX4789– MAX4794 ON 3 PIN-PACKAGE KAFG MAX4791EUK-T -40°C to +85°C 5 SOT23-5 AEAE -40°C to +85°C 3 x 3 Thin QFN-EP 5 IN MAX4792EUS-T -40°C to +85°C 4 SOT143-4 4 N.C. MAX4792ETT 3 x 3 THIN QFN -40°C to +85°C 3 x 3 Thin QFN-EP ABQ KAFH ABR MAX4793EUS-T -40°C to +85°C 4 SOT143-4 KAFI MAX4793EUK-T -40°C to +85°C 5 SOT23-5 AEAG MAX4793ETT *( ) FOR THE MAX4790, MAX4792, AND MAX4794. TOP MARK MAX4791EUS-T -40°C to +85°C 4 SOT143-4 MAX4791ETT GND 2 TEMP RANGE -40°C to +85°C 3 x 3 Thin QFN-EP ABS MAX4794EUS-T -40°C to +85°C 4 SOT143-4 KAFJ MAX4794ETT ABT -40°C to +85°C 3 x 3 Thin QFN-EP Selector Guide PART CURRENT FLAG AUTOPINPACKAGE LIMIT (mA) FUNCTION RETRY MAX4789EUS 4-SOT143 200 No No MAX4789EUK 5-SOT23 200 Yes No MAX4789ETT 200 Yes No 200 No Yes 6-QFN MAX4790EUS 4-SOT143 MAX4790ETT 200 No Yes MAX4791EUS 4-SOT143 250 No No MAX4791EUK 5-SOT23 250 Yes No MAX4791ETT 6-QFN 250 Yes No MAX4792EUS 4-SOT143 6-QFN 250 No Yes MAX4792ETT 250 No Yes 6-QFN MAX4793EUS 4-SOT143 300 No No MAX4793EUK 5-SOT23 300 Yes No MAX4793ETT 300 Yes No MAX4794EUS 4-SOT143 300 No Yes MAX4794ETT 300 No Yes 6-QFN 6-QFN _______________________________________________________________________________________ 9 MAX4789–MAX4794 Pin Configurations (continued) MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 10 ______________________________________________________________________________________ 200mA/250mA/300mA Current-Limit Switches SOT5L.EPS ______________________________________________________________________________________ 11 MAX4789–MAX4794 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 6, 8, &10L, QFN THIN.EPS MAX4789–MAX4794 200mA/250mA/300mA Current-Limit Switches PACKAGE OUTLINE, 6, 8 & 10L, QFN THIN (DUAL), EXPOSED PAD, 3x3x0.80 mm 21-0137 C COMMON DIMENSIONS SYMBOL A MIN. 0.70 MAX. 0.80 D 2.90 3.10 E 2.90 3.10 A1 0.00 0.05 L k 0.20 0.40 0.25 MIN A2 0.20 REF. PACKAGE VARIATIONS PKG. CODE N D2 E2 e JEDEC SPEC b T633-1 6 1.50–0.10 2.30–0.10 0.95 BSC MO229 / WEEA 0.40–0.05 1.90 REF T833-1 8 1.50–0.10 2.30–0.10 0.65 BSC MO229 / WEEC 0.30–0.05 1.95 REF T1033-1 10 1.50–0.10 2.30–0.10 0.50 BSC MO229 / WEED-3 0.25–0.05 2.00 REF [(N/2)-1] x e PACKAGE OUTLINE, 6, 8 & 10L, QFN THIN (DUAL), EXPOSED PAD, 3x3x0.80 mm 21-0137 C Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.